Apparatus for treating gas liquor



Aug. 10 1926. 1595,???

. LE RY W. HEFFNER ET Al.

APHRATUS FOR TREATING @As LIQUORv l Original Filed Dec. 16, 1924 2 Sheets-Sheet 1 f6 f5 '18% Was?? fam@ i' Y monues LE ROY W. HEFFNER ET AL APPARATUS FOR TREATING GAS LIQUOR Original Filed Dec. 16, 1923i 2 Sheets-Sheet 2 A 111111LL'L L;:3

.ELLI- ND WILLIAM TEDDY, OF

ASSGNORS TO DELAWARE.

original appioaiom le 155,

' zipploaton e .ocember The present invention reia'ss o mi im prove sipzaraus for tioatmen of gas and anmionoca liquor from gais jgiaos or coke furnaces, siro. This imfsmbion rslaes pariouiary ro appa-rows for carrying oui the process flssorihsd in our sppioatiol Seriai No. 756.1% ived @member 16. E924 and is a dvisioii of ppicoiion now Patent No. 1.566, Q5.

Tho accom-r onyirifg cirawiigs iiius-raofz op porotos, 'embodying the Fig. l shows s soriswha diag-mo :form and arrangement of the opp 2 shows on mi onisrgsd scaiooos form of tho ammonia stili isoll.

..eorrisng irs io it Wiii ho soon rh vt'he 'apparatus iociuesiho prohsrer l for aha gas liquor wi-3h o. reoiiso pipe 2 hav ing ravs "ohr-3ro' i, oufwith or: orf-doi 'pipe 5,# for oorivoyii os gos iiquor to rhs rop of the free ammonio. 'which it enters 'iirough islas hrohsh :m 7. The vapor or ammonia outis't `pipe iron; the im@ ammonio, ssiii is imiioas S.

:The has the usuali iimo is@ 9- r-Jhich is oonnoosd Wr'sh the xsd. ammonia sriii hroogh the pipe l. The ammonio. from Ehe fited.

ammonio, stii hrough the l?, to the free momona siiii in he usoai Way. The iimo ieg prov/Riso?, v h a hsstihg coil 13 having stoom' Voir@ M; While has s. sro sappi); Pipe l Wih coriroiioo Vi i@ .hersiri. The wash@ iiquor from the fixed ammonio stili 4is drawri @if througl'i im pipe l? hav ing Coiiiro wfaivs 18 therein. appuratus thus for describa@ may he ho as tie ordinary ammonio stili, or the stiii may he modified, s. g., as illustrated in Fig. 2.

Tho supply of gas .liquor enters. hrough the pipe 19 and shrough ons or they oir-.1er or both of the brauch pipes 20 and 2l to sho .preheaten Suitahie regulating faires 22, 23, and .23a are provide. The h *auch pipo 2l has a coii 2% arranged in tho dephegma- "sor 28 to cool the 'gases passing therethrough,

"the'liquor being itself somewhat heated in iiihis Wayl The vapors from the ammonia. stii enter vho phenol absorber 26 which may he of any sutabo construction to bring 'she gases into in'inimaito comizio@ with the absorbent. For sexologie, im okaii soiusioo may he provided lvl, Serial; 13o. 756.193, Patent No. 1,566,795.

ALPRATUS FOR TREATING GAS LlQUD.

lvivided and this i925'. Serial o. 77,099.

Aor passi Ig lhroiigh wie sphegniator 287 ms ammonia gos, rroeci from slconslder- @bio portion of is admired Water vapor, posses through the pips, having Voir@ 33 therein. ao 'tho shtursor or absorber. A partof this may ho returned. through the pipo 32, having 'miro therein, to tho bot rom .of 'os free ammonia still, o. suitable pump 3? .heilig provided for forcing this ammonio imo theirs@ ammonia stiii.

@no soitshis form of ammonia. stili is iiiosroed more in etsii in Fig. 2, ho om @rsi saires of this soli boing indicato by the same reference characters uso in Fig. l. The irse ammonia stiii i and the fixed smmomia, siiil 1G srs md@ up of suitable haie 'arrangements' for irisoring that the ammonia .ized ammonio stili passes through the pils@ 2 ini-o -hs iowor part of the Eres ammoyiia.

siii and. posses upwordiy oounierourrentto "tho hoi'y liquor iowing; dowmvardij/ through his porion of the stii. Ey introducing sd- Lil'tionni ammonio hrough Sno pipo 22, the

o insure that all or substantially all of the p iienols and tar acids are driven off when ho proper temperature is maintsined. The gas liquor from the bottom of thel free animoriia stili passes down through the lime leg where the reaction with lime takes place, and the liquor then Hows to the fixed ammomia.y 'stili Where Athe ammonia set free is driven o. i

i It Wii ho noted that the u er or free ammomia ssoion of the still of ig. 2 is broken away o indicate a still of indeinite height.

' amount of ammonia passing upwardiy through this stlii con he inoresod suiion-mtly.`

nsteac of being of usual height, additional sections may be provided to give an increased' opportunity for the prehoa-tod gas liquor to come into Contact with the ammonia. vapors.

'the Hm Lha Sbel -dde @tiem camu L PSY? @comes l consdsmme ph@ um' reaches the xo' ici@ lah i1 vapors can b amm n Pm a mm Th@ im aiuti, hlg'h of a and the fixe whoa 2G Wh ma 25 98 f vapo? tlaly a ammsn The lil

menaces liquor non' produced cannot loe discharged into streams, because of its polluting eect, and where it requires special disposal, as hy pumping a considerable distance, the present process results in a wast-e liquor sui'rciently lpure to permit it to he discharged ,into p streams with the avoidance or such nuisance.

While We have described the invention more particularly tor the treatment of "gas liquor, and while the invention is of special value for such treatment, und, enables the present nuisance of still Waste liquors to be overcome, the apparatus is applicable for t-he treatment of other Waste liquors, and particularly liquors'trom processes in which phenol is employed, and which contain phenol in small amounts. The apparatus can thus he employed to advantage for the recovery of phenol presentl in small amounts in Waste liquors from the manufactureof phenolic resins or condensation products.

We claim l l. An ammonia still provided with heating means adapted to maintain the liquor in the still at a temperature of around 98 to 100 C, or higher, and provided with means for introducing additional ammonia to the still to increase the ammonia content of the liquor therein, whereby phenolic compounds can he driven ofi from the still with the ammonia.

' 2. n ammonia still provided with heating means for heating the still and the liquor therein to a suflicient temperatureto drive oil' phenolic compounds With the ammonia, a purifier arranged to purity the resulting ammonia from admired phenolic compounds, and means for returning a part or all of the resulting purified ammonia to the still. I

3. An ammonia still provided with heating mea-ns, a purifier arranged to remove` phenolic compounds "from 'the ammonia va- .to the still, and means for returnin pors Acoming from the still, a condenser or dephlegmator for condensin part of the Water vapor and ammonia an means for returning the resulting ammonicel condensate to the still.

4. An ammonia still provided with heating means, a purier arranged for purifying the ammoniacal vapors and for removing phenolic compounds therefrom, s. condenser or deph'legniator for condensing a part of the water vapor admixed with the ammonia, means for returning the resulting condensate additional uncondensed ammonia gas to t e still to increase the-ammonia. content of the still.

5. An apparatus for distilling gas liquor and for removing and recovering ammonia and phenolic compounds therefrom, compristing; a preheater for the liquor, an ammonia still having free and xed ammonia sections together with means for heating the same. means for purifying the escaping ammonia from phenolic compounds, means' or condensing water vapor from the ammonia, and for returning the condensate to the iXed ammonia still, and means for recirculating part of the purified and partially dried ammonia vapors to the freeamm'onia still.

6. An ammonia still provided with heating means, a purifier arranged to remove phenolic compounds from the ammonia vapors coming from the still, a condenser or dephlegmator for condensing part of the water vapor` and ammonia, said condenser heinef cooled by indirect contact with cold liquor fed to the still` and means for returning the ammoniacal liquor from the condenser to the still.

ln testimony whereof Weaftix our signatures.

LE ROY WILBUR HEFFNER. 'WILLAM TIDDY. 

